In the Mitte district of Berlin, a historically significant building ensemble is currently being refurbished in line with heritage preservation guidelines on behalf of the Institute for Federal Real Estate. From 1890 on the complex along Mauerstrasse served as Deutsche Bank’s headquarters and was gradually extended. Linked with each other by a bridge, the buildings are now being carefully converted in line with the standards for a federal ministry: state-of-the-art, functional offices. The northern section is to be the Berlin seat of the Federal Ministry of Health; the southern section will serve further ministerial users. The focus is on a pared-back design and clear formal vocabulary. A structural addition in the inner courtyard restores the erstwhile geometry of the northern edifice, i.e., a foursided peripheral block with separate inner courtyards.